Average Temperature in Waterloo by Year

This page contains a list of the average yearly high and low temperatures in Waterloo, Iowa for each year between 1895 and 2023. It is based on NOAA data.

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What Was the Hottest Year Ever in Waterloo?

1931 was the warmest year in the history of Waterloo, Iowa. The average daily high temperature was 64.0 °F, and the average low was 42.2 °F.

What Was the Coldest Year Ever in Waterloo?

1917 was the coolest year in the history of Waterloo, Iowa. The average daily high temperature was 54.0 °F, and the average low was 31.8 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	3	63.1	40.2
2022	60	58.7	36.8
2021	11	61.4	39.5
2020	14	60.4	39.2
2019	70	57.5	37.3
2018	92	56.7	36.8
2017	24	59.6	38.5
2016	13	59.9	40.2
2015	30	59.1	38.4
2014	125	54.9	34.0
2013	107	56.2	35.5
2012	4	63.3	39.7
2011	47	58.4	37.7
2010	63	58.0	37.2
2009	103	56.3	35.9
2008	118	55.5	34.8
2007	48	58.1	37.9
2006	20	60.0	38.9
2005	40	59.0	37.7
2004	44	58.9	37.3
2003	46	59.7	36.4
2002	22	60.4	38.2
2001	34	58.7	38.2
2000	45	58.7	37.4
1999	21	60.2	38.6
1998	9	60.2	40.9
1997	97	56.2	36.7
1996	119	55.4	34.7
1995	67	57.7	37.3
1994	74	58.0	36.5
1993	94	55.8	37.4
1992	64	57.8	37.4
1991	53	58.1	37.7
1990	27	59.5	38.1
1989	104	57.2	34.8
1988	54	60.1	35.7
1987	10	61.0	39.9
1986	72	57.2	37.4
1985	114	55.9	35.0
1984	82	57.2	36.8
1983	69	56.6	38.2
1982	109	55.5	36.1
1981	65	58.3	36.8
1980	86	57.6	36.2
1979	115	55.3	35.5
1978	127	54.7	33.9
1977	111	56.4	34.9
1976	113	57.7	33.2
1975	90	57.0	36.6
1974	96	56.4	36.7
1973	37	57.6	39.2
1972	128	53.5	33.9
1971	124	55.0	34.4
1970	120	55.3	34.8
1969	126	54.4	34.4
1968	100	56.8	35.6
1967	121	55.8	34.2
1966	105	57.2	34.8
1965	116	55.7	35.0
1964	73	58.7	35.9
1963	89	57.8	35.8
1962	110	55.6	36.0
1961	93	56.7	36.7
1960	108	56.4	35.2
1959	84	56.9	37.0
1958	99	57.0	35.7
1957	76	56.9	37.5
1956	75	58.2	36.2
1955	51	58.9	37.1
1954	17	59.8	39.5
1953	16	60.7	38.6
1952	29	59.8	37.7
1951	122	54.6	35.2
1950	117	56.0	34.6
1949	39	59.1	37.6
1948	36	59.2	37.7
1947	42	57.7	38.7
1946	18	60.3	38.7
1945	80	57.1	36.9
1944	32	58.5	38.8
1943	85	57.7	36.3
1942	57	58.3	37.4
1941	7	60.7	40.5
1940	66	57.8	37.2
1939	5	62.3	39.1
1938	6	61.0	40.3
1937	88	57.6	36.1
1936	61	59.0	36.4
1935	55	57.7	38.0
1934	8	62.1	39.1
1933	12	61.5	38.8
1932	56	58.7	37.0
1931	1	64.0	42.2
1930	23	61.1	37.3
1929	112	56.8	34.5
1928	26	59.8	38.1
1927	33	59.6	37.5
1926	58	58.5	37.1
1925	35	60.7	36.2
1924	102	57.4	34.8
1923	25	60.5	37.4
1922	15	61.4	38.0
1921	2	62.8	40.4
1920	62	58.5	36.9
1919	52	58.5	37.3
1918	71	58.5	36.1
1917	129	54.0	31.8
1916	101	57.7	34.5
1915	98	56.7	36.0
1914	50	59.4	36.5
1913	28	59.3	38.2
1912	123	55.8	33.7
1911	43	59.0	37.4
1910	49	59.7	36.3
1909	83	57.1	36.8
1908	19	60.6	38.3
1907	68	57.9	37.1
1906	41	58.9	37.6
1905	79	58.1	36.0
1904	106	57.4	34.4
1903	91	57.3	36.3
1902	77	57.5	36.9
1901	38	59.9	36.9
1900	31	59.5	37.8
1899	81	58.1	35.9
1898	78	58.2	36.0
1897	95	57.6	35.5
1896	59	58.8	36.7
1895	87	58.8	34.9

Weather Station Details

Years	Station	Coordinates
1950–2024	Waterloo Municipal Airport	location
1895–1950	Waterloo	location